我们有关于南佛罗里达当前地形和植物覆盖的数据。
We have data about South Florida's current landscape and the plant cover.
然而，由于各岛屿国家的陆地面积、1人口密度、气候、地理地形条件等有很大差异，它们的森林覆盖程度也有很大差别。
However, due to a considerable variation in land area, 1 population density and climatic, geological and topographical conditions, the extent of forest cover differs greatly among the island states.
系统而详实了解覆盖地球表面三分之二的海洋水域的化学特性、地形及水流特性代价高昂，但是可以实现的。
Systematic and detailed understanding of the chemistry, topography and flow of the waters that cover two-thirds of the planet would be costly, but it could be achieved.
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